Clearer for drawing-rolls.



No. 658,918. Patented Oct. 2, |900' w. L'KEAcH, CLEAREB FDR DRAWING ROLLS.

(Application Bled Aug. 4, 1899.) (No' M adel.)

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WILLIAM E. KEACH, OF FITCHBURG, MASSACHUSETTS.

CLEARER FOR DRAWING-ROLLS.

SPECIFICATION forming part of Letters Patent N0. 658,918, dated. October 2, 1900.

Application tiled August 4, 1899.

To all whom, t may concern:

Be it known that I, WILLIAM E. KEACH, acitizen of the United States, residing at Fitchburg, inthe county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Clearers for Drawing- Rolls, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

The invention relates to the herein described clearers for drawing-rolls of drawingframes.

The invention will be described in connection with the drawings, wherein- Figure l is a View, partly in elevation andv partly in vertical section, of a drawing-frame equipped with my invention; and Fig. 2 is a View in perspective of the clearer for the top rolls removed and inverted.

Referring to the drawings, A A A2 represent the upper or top rolls of the drawingframe, and B B B2 the underneath or lower rolls of such frame. The roving passes through the machine from the rolls A B, and the rolls remove from it more or less fiber or lint and which it is the purpose of myinvention to immediately remove and in such a way as to hold it from dropping back upon the roving. i

The invention further relates to the construction of the clearers, whereby they are made to iit without adjustment-rolls, which may be adjustable in relation to each other or otherwise occupy dierent relations to each other.

The invention further relates to the peculiar construction of the clearers, whereby an economy in the manufacture is obtained.

C represents the clearer used with the upper rolls; C', the clearer used with the lower rolls. Each clearer preferably is made of one piece of wood. The upper clearer C has the section c, having the plane or level under surface c', extending from the corner c2 to the corner c3. It is covered with the clearercloth c4, which is united thereto by cement or in any other desired way and which provides a clearing-surface which extends infront of a vertical line drawn diametrically through the roll A and considerably behind a diainetrical line drawn vertically through the tent.

Serial No. 726,124. (No model.)

rollA.y The extent of these overlaps is sufficient to accommodate the same clearer to any lusual variation in the position of the rolls A A. with respect to each other, also with re spect to the roll A2-that is, within certain limits. To cover the entire range of drawing-machines, only two sizes of the clearer would probably be necessary. The upper clearer C has also formed lengthwise it in front of the corner c2 and between it and the corner c5 a deep longitudinal channel or cavity c, which is adapted to receive the lint or fiber removed from the roll A2. From the corner c5, which is arranged upon the line of the vertical diameter of the roll A2, the clearer C extends downward to form a nose c7, the inner surface cs of which is curved to be parallel with the curve of the surface of the roll A2, and this surface is lined with clearercloth C9 from the corner c5 ofy the clearer to the corner om, and it is held in contact with the surface of the roll A2 throughout its ex- This and the roll B2, being the last rolls to act upon the roving, are the ones from which it is especially hard and desirable to remove the lint or ber, and for this reason the clearer is arranged to bear upon a larger area or surface of the roll. It is also desirable that the lint or fiber removed from the roll should not drop back upon the roll or upon the roving, and for this purpose the rear end of the clearer-section o9 is not carried back of a vertical line passing through the center of the roll. By ending this section of the clearer at this point and by providing an upward-extending cavity beyond itspace is formed for receiving and holding the lint or fiber above the roll A2 and removed from the roll A', and the lint or fiber is forced and held therein in such a manner as to stay there and have no tendency to drop between the rolls upon the roving. The clearer C is held in place by pins D, projecting from the ends of the clearer and held by the clearer, which pin-s enter vertical slots d in the downward extensions d from the cover d2. The slots prevent horizontal movement of the clearer, but permit it to have a slight vertical movement with respect to the roving. The weight of the clearer is generally sufficient to maintain a working relation between its clearing-surfaces and the rolls.

Usuallyan upper cleareris made of a length to covertwo pairs of rolls. The lower clearer C is of the same length as the upper clearer, is arranged beneath the under rolls B B2, preferably does not extend beneath the roll B, is supported by the frame E, and has the section f, which is plane, and the upwardlycurved end lf. The sectionsff are integral, and the section f extends considerably beyond a vertical line drawn through the centeroftheroil B'. The section f hasa curved surface f2 in continuation of the plane surface of the section f, and both surfaces are covered with clearer-clothff. The clearer is adapted to he moved horizontally upon the frame E and is held in cont-act with the rolls B2 Yby means of the drawing-cord f4, which is attached to the rear end of the clearer and which extends about the rolls B' B2 in their reduced parts-and the weight f5 attached to the outer end of said drawing-cord.

By making the rear end of the clearer to overlap the roll B the same clearer will serve without. adjustment for different positions of the drawing-rolls B' B2 in the same frame or in different frames.

It will be understood that the rolls A B' are revolved more rapidly than the rolls A B and the rolls A2 B2 more rapidly than the rolls A B', and that the more rapidly the rolls are turned the more likely they are to pick up lint or liber and finally catch the roving or thread. For instance, the roll A revolves so slowly that it collects but very little, if any, and can do without aclearer; but I prefer to use one therewith to remove what litt-le may collect thereon and also that the roll may act as a support for the entire body of the clearer. The rolls A B' revolve suiiiciently fast to pick up or attract. some libel' or lint, and the rolls A2 B2 revolve so rapidly that they ,take on lint or fiber very quickly, and for this reason it is essential that the area of the clearer-su rface upon the roll should be largeabout one-quarter of the entire area of the roll-and it is also desirable for this reason that the clearers begin to act upon the surfaces of the rolls where they do-tbat is, at lines in extension of the horizontal diameters of the rolls-and that the upper roll delivers bunches of liber or lint. upon a vertical line extending through the center of the roll, this length of bearing and the position of delivery acting to remove the fiber and dust from the roll into the cavity provided for it, Where it is held in a somewhat matted shape, thus doing away with the possibility of the roll l dragging it downward onto the roving and i cause overlapping with it and the other liber or lint upon the roll.

I would say that the invention is applicable to all classes of machines using drawingrolls in the treatment of any kind of fiber, and I would further say that the devices as made tit without. change machines of different makers and of different types and also different adjustments of the rolls of such machines.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States- 1. A clearer for drawing-frames comprising a single integral piece of material, having upon its working face a curved and a flat clearing-surl'ace separated by a lint receiving and retaining space extending from a point substantially above the frontdrawing-roll to the second drawing-roll, the clearing-surface of the curved face being in contact throughont with the drawing-roll and being carried only to the corner of the lint receiving and retaining space between the front and second d rawing-rolls, whereby lint cleared from the d rawing-roll is carried at once free of the clearing-surface into the lint receiving and retaining space.

2. A clearer fora series of sets of drawingrolls of a drawing-frame comprising a long, Hat, relatively-wide, integral support, common to all the series and sets, and providing a series of sets of independent faces or beds for receiving and holding clearer-cloth and presenting it to said series of sets of drawingrolls, which sets ofindependent faces or beds are separated from each other by cross-recesses, each of which sets of faces or beds having a relatively-wide, flat surface and a curved surface, clearer-cloth applied to said Hat and said curved surfaces, the latter contacting throughout its extent with the drawing-roll, the said flat and curved surfaces being disposed with respect to each other to provide means for the simultaneous setting of the clearer to a series of sets of drawingrolls and, also, to provide means whereby the same clearer may be applied to drawingframes in which the sets of drawing-rolls vary in setting or distance from eachother and the said curved and ilat surfaces being adapted to bear upon the surfaces of the rolls in the manner indicated, as and for the purposes set forth.

WILLIAM E. KEACH.

Witnesses:

F. F. RAYMOND, 2d, J. M. DoLAN.

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